【摘要】 根据电磁流体力学 (MHD)的基本理论 ,建立了在采用矩形电磁线圈和工频电源的条件下电磁分离铝熔体中夹杂颗粒的体积力、颗粒运动速度等数学模型·模拟计算结果表明 ,电磁体积力越大 ,分离力越大 ,夹杂颗粒运动速度越快 ;夹杂颗粒的粒径越大 ,颗粒运动速度越快 ;粒径大于 30 μm的夹杂颗粒运动速度较快 ,容易用电磁方法分离 ,粒径小于 10 μm的夹杂颗粒运动速度较慢 ,难分离·更多还原

【Abstract】 The mathemetical models of electromagnetic force and moving velocity of inclusion particles are presented in molten aluminium with an electromagnetic field by rectangle coil and 50?Hz current according to the basic theory of magnetohydrodynamics (MHD). The results of the numerical simulation show that the greater electronmagnetic force the greater separating force is and the quicker the inclusion particles move,and the bigger the inclusion particle the quicker the particle moves,therefore,the separation of particles bigger than 30?μm is easy,but it is hard to separate the particles smaller than 10?μm.更多还原